Patrick norton



(No Model.)

I P. NORTON.

ROOFING PLATE.

No.5 27,505. Patented owls. 1894.

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I a F F 43 111.11: :9" J. J. j; :j a

time; NQRTON, or JE SEY crrY, NEW ERsEjY.

1 v 0Hug-PLAT E srnormcanon forming ate Letters Patent No. 527,505,dated October 16, 11394.

Application filed A ril 21,1894. Serial No. scales. (No model.)

To all whom it may concern.- a I I Be it known thatI, PATRICK NORTON, ofJersey City, Hudson county, New Jersey, have invented an ImprovedRoofing-Plate, of which the following is alspecification.

This invention relates to an improved corrugated plate for roofing'andsiding, which is' constructed with a view of preventing water jure thearticles upon which they fall, andv from condensing on its lowerface.densation of water or sweating, is objectionable for various'reasons,the principal ones being that the drippings are apt to inthat the wateradhering to the plates is apt to accelerate their decay. For avoidingthe ,injuriousresults of such condensation and dripping, roofings havealready been devised consisting of corrugated metal plates to which aresecured, ongtheir under side, corrugated layers of non-conductingmaterial such as felt; but hitherto these layers of non-conductingmaterial ;have been secured to the metal plates by continuous contact ofthe surfaces, as by cementing the whole of the upper surface of thenon-conducting material to the under surface of the metal. This wouldform a very durable roofing plate were it not for the changes oftemperature; but owing to the great difference in the expansibility ofthe metal and non-conducting material with .a rise of temperature, suchroofing plates will be short-lived. The difierenc'e in expansibility isrendered the more efiective in breaking up and destroying the unionbetween the metal and non-conducting material from the fact that theformer is exposed to great ex:

tremes of heat and cold while the latter is'not- This conlower ofnon-conducting material, which layers are secured to each other atsparsely scat-- tered points, as by rivets.

to expand or contract between the points common to both, the rivet-s,and there is no tendency whatever to become loose. Afurther advantage ofthis means of union is its economy of manufacture, and furtheradvantages are that there is an air-space between the two layersfor,ventilation, and t that rust spots from the upper layer arenotliable to strike through to the lower. i

In the accompanying drawings: Figure 1 is a top view, partly brokenaway, of a pair of my improved roofing plates. Fig. 2 is a section online 2, 2, Fig. 1; Fig. 3, an enlargedsection on line 3, 3, Fig. 1; Fig.4, a bottom view of a modification, and Fig. on line 5, 5, Fig. 4. Theletter (it, represents a corrugated shee metal plate to the lower sideof which is secured a layer of corrugated asbestos paper, roofing felt,or similar material, which is a poor conductor of heat. This lining isnot, bodily connected to the roofing plate by an adhesive, but it issecured to such plate at intervals, by means of a series of parallelcorrugated metal bands 0, arranged at suitable distances apart andextending along the lower face of the lining. The bands c, are attachedto the plates a, by rivets c, passingthrough the lining b, and theyserve not only to ofier a retaining surface for the rivets, but also toprevent the lining from sagging.

The best way to manufacture my roofing plate'is to subject the sheet a,lining b, and

bands 0, simultaneously to the action of the 5 a Section 5 Thisarrangement entirely obviates the above mentioned defects, foreachlayer, being corrugated, is free corrugating rolls, so that allparts are shaped together. 1

p In Figs. 4. and 5, the bandstc, are provided with a covering (1,composed preferably of the same material as the lining b, and whichprevents 'the bands themselves from sweating. The covering (1, is foldedaround the edges of the bands, before the latter are riveted to theplates at. It will be seen that in this way, the

entirevroofing plateis' protected at the bot-' tom by the lining, sothat sweating and eon-- sequent dripping are rendered What I claim is VA roofing plate Comprising a. corrugated meimpossible.

tallic plate, a similarly-corrugated, non-cone ducting lining, such asasbestos, on the under side of the said plate, and similarly corrugatedstrips or hands extending the width en'ds bent round'the edgesof theplate, and

.- PATRICK NORTON.

- partly by an intermediate rivet, sul stantiall y as described.

Witnesses:

WMUT. ENRIGHT, F. v. BRIESEN.

